FlowULTRA: wall-mounted HRV for offices and renovations

HRV retrofit solution for residential and small office spaces

A new addition to the Helty wall-mounted range, FlowULTRA represents the perfect evolution of HRV retrofit technology for medium-sized rooms, open spaces, and small offices where the need for proper air exchange is crucial in recently renovated contexts, while maintaining the energy efficiency achieved through building envelope insulation

88% thermal recovery efficiency

19.5 dB sound pressure level

120 m3/h maximum airflow

Constantly clean air with ePM2.5 65%/ISO Coarse 60% filters

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A solution designed to counteract condensation and mold issues and meet air hygiene requirements in medium-sized rooms, small offices, professional studios, and medical practices.

Increased Airflow Capacity and Easy Installation

Flow ULTRA is the new continuous dual-flow ventilation unit from Helty, designed to serve individual rooms with adjustable airflow rates ranging from 15 to 120 m3/h. This decentralized HRV unit can be installed with two 100 mm diameter core drillings on the perimeter wall and comes with a standard white ABS cover for seamless aesthetic integration with the existing environment.

High Filtration Capacity and Thermal Efficiency

The continuous replacement of exhaust air with fresh air, combined with external air filtration using an ePM2.5 65% filter, creates a healthier and more comfortable environment by eliminating dust, odors, spores, and pollen. Energy savings are further enhanced by the enthalpy heat exchanger with efficiency up to 88%.

Available in Standard, PLUS, and ELITE Versions

All FlowULTRA models come standard with an infrared remote control for unit management. The Plus version is enhanced with the Helty Home app, equipped with a humidity sensor for automatic ventilation operation. The flagship model, FlowULTRA Elite, is tailored for those most sensitive to indoor pollution: it also monitors CO2 and VOC levels, automatically adjusting the airflow rate to ensure constant air hygiene.

Technical data

Characteristics

U.M.

Value

Airflow

m3/h

15/30/45/60/80/120* ⁽¹⁾

Airflow adjustment

night + 4 stages + hyperventilation

Power consumption ⁽²⁾

3/6/9/13/23/55

Supply voltage

V AC

230

Max. current consumption ⁽³⁾

0.45

HRV unit weight	kg	12
Unit dimensions (H x L x P)	mm	1000 x 320 x 180 ⁽⁴⁾
Heat exchanger		enthalpy with cross-flow countercurrent
Heat recovery efficiency	%	88
Sound pressure level ⁽⁵⁾	dB(A)	19.5/24.5/31.5/36.5/43.5/51.5
Facade noise abatement Dn,e,w	dB	45
Energy class		A+ / A / E
SEC	kWh/m2a	-71.6 / -37.6 / -15.5

1. In high-speed ventilation mode2. In hyperventilation mode3. With 230 V AC supply voltage4. (horizontal W x H x D)5. Measured on a 30 m² semi-anechoic environment at a distance of 3 m

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